The scenes set in the 1960s were shot in 35mm, the scenes set in the 1940s were shot in 16mm, and the scenes set earlier than that were shot in 8mm.
Bulgaria's 2009 Academy Awards official submission to Foreign-Language Film category.
The song at the beginning of the movie is called "Smuglyanka Moldovanka", a Russian partisan song from WW2.
During the shooting period of the film, Tanya Ilieva was in a 2-year relationship with musician Rushi Vidinliev, later he became her husband. Despite being in a relationship, she agreed to do the explicit sex scenes in this movie.